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Juvenile-mature correlations in heart of palm plants

M.L.A. Bovi^I; G. Godoy Jr .^II

^ISeção de Plantas Tropicais, Instituto Agronômico de Campinas, Caixa Postal 28, 13001 Campinas, SP, Brasil. Send correspondence to M.L.A.B.
^IIEstação Experimental de Ubatuba, Instituto Agronômico de Campinas, Caixa Postal 59,11680 Ubatuba, SP, Brasil

ABSTRACT

Juvenile-mature correlation coefficients relating some vegetative characters and yield of Euterpe edulis Mart. are presented as an aid for early and indirect selection in breeding work with this palm. Non-destructive measurements, such as plant girth, number of leaves, raquis and petiole length, showed high phenotypic correlation coefficients when paired with heart of palm weight, diameter and length. Age to age correlation coefficients between palm girth and number of leaves were also positive and statistically significant, from eighteen months until ten years after planting, with increasing correlation coefficients over time. Estimates of correlated gain obtained by selection on plant girth at different ages showed that expected gain starts to be worthwhile three years after planting, corresponding to over 73% of the gain expected when selection was delayed to the last stage. Expected gain for number of leaves starts increasing significantly four years after planting. As girth and number of leaves were correlated, it is advisable to select only for girth, as it showed a better relationship with yield components at harvest. Due to the rate of change of correlation over time and the expected gain obtained by the selection practiced, especially as regards palm girth, it is suggested that phenotypic selection of heart of palm plants could start as early as eighteen months, with a better probability of selecting superior genotypes three years after planting.

Keywords: Juvenile-mature correlations; Heart of palm.

REFERENCES

Ades, P.K. and Burgess, I.P. (1982). Improvement in early growth rate achieved by phenotypic selection of Eucalyptus grandis. Aust. For. Res. 12: 169-173.

Borges, R.C.G., Brune, A., Silva, J.C. and Borges, E.E.L. (1980). Correlações entre caracteres de crescimento em Eucalyptus grandis. W. Hill ex Maiden. Rev. Árvore 4: 146-156.

Bovi, M.L.A., GodoyJúnior, G. and Sáes, L.A. (1987a). Híbridos interespecíficos de palmiteiro (Euterpe oleracea x Euterpe edulis). Bragantia, Campinas, 46: 343-363.

Bovi, M.L.A., Godoy Júnior, G. and Sáes, L.A. (1987a). Pesquisas com os gêneros Euterpe e Bactris no Instituto Agronômico de Campinas. O Agronômico (Campinas) 39: 129-174.

Bovi, M.L.A., Godoy Júnior, G. and Sáes, L.A. (1991). Correlações fenotípicas entre caracteres da palmeira Euterpe edulis Mart. e produção de palmito. Rev. Bras. Genet. 14: 105-121.

Corley, R.H.V., Hardon, J.J. and Tan, G.Y. (1971). Analysis of growth of the oil palm (Elaeis guineensis Jacq.). I. Estimation of growth parameters and application in breeding. Euphytica 20: 307-315.

Falconer, D.S. (1964). Introduction to Quantitative Genetics. 8 ed. 'Die Ronald Press Company, New York.

Ferreira, V.L.P., Miya, E.E., Shirose, I., Aranha, C., Silva, E.A.M. and Highlands, M.E. (1976). Comparação físico-químico-sensorial do palmito de três espécies de palmeira. Coletânea do ITAL (Campinas) 7: 389-416.

Franklin, E.C. (1977). Juvenile-mature correlations. Proceedings of Joint IUFRO Workshop pp. 205-212, Brisbane.

Guerra, M.P. (1989). Embriogênese somática em Euterpe edulis Mart. (Palmae). Doctoral Thesis. Univ. de São Paulo, São Paulo.

Kung, F.H. (1975). Development and use of juvenile-mature correlations in a black walnut tree improvement program. Proceedings of the 12th Southern Forest Tree Improvement Conference, Baton Rouge, Louisana, pp. 243-249.

La Farge, T. (1975). Correlations between nursery and plantation height growth in slash and loblollypine. Forest. Sci. 21: 197-200.

Lambeth, C.C. (1980). Juvenile-mature correlations in Pinaceae and implications for early selection. Forest Sci. 26: 571-580.

Mohrdiek, O. (1979). Juvenile-mature and trait correlations in some aspen and poplar trials. Silvae Genetica 28: 107-111.

Nanson, A. (1968). Perspectives d'amelioration en première genération par sélection des provenances. Silvae. Genetica 17: 130-132.

Nanson, A. (1969). Juvenile and correlated trait selection. Proceedings of the IUFRO Second Meeting Working Group on Quantitative Genetics, Raleigh, N.C., pp. 17-25.

Nepveu, G. and Birot, Y. (1979). Les corrélations phenotypiques juvénile-adulte pour la densité du bois et la vigueur chez l'Epicéa. Ann.Sci. Forest. 36: 125-149.

Singh, R.K. and Chaudhary, B.D. (1979). Biometrical methods in quantitative analysis. Kalyani Publ., Daryaganj, New Delhi, pp. 303.

Squillace, A.E. and Gansel, C.R. (1974). Juvenile-mature correlations in slash pine. Forest Sci. 20: 225-229.

Steel, R.G. and Torrie, J.H. (1980). Principles and Procedures of Statistics. New York, McGraw-Hill, 632p.

Steinhoff, R.F. (1974). Juvenile-mature correlations in ponderosa and western white pines. Proceedings of the IUFRO Joint Meeting of Working Parties on Population and Ecological Genetics, Breeding Theory and Progeny Testing. Roy Coll For, Dep. Forest Genet., Stockholm, Swed., pp. 243-250.

Vencovsky, R. (1977). Princípios de Genética Quantitativa. Dep. Genética ESALQ-USP, 97 pp.

Visser, T. and De Vries, D.P. (1970). Precocity and productivity of propagated apple and pear seedlings as dependent on the juvenile period. Euphytica 19: 141-144.

Wakeley, P.C. (1971). Relation of thirtieth-year to earlier dimensions of southern pines. Forest. Sci. 17: 200-209.

Waxier, M.S. and Van Buijtenen, J.P. (1981). Early genetic evaluation of loblolly pine. Can. J. For. Res. 2: 351-355.

Zobel, B. and Talbert, J. (1984). Applied Forest Tree Improvement. New York. John Wiley & Sons, Inc. 496p.